Standard Deviation Based Weighted Average Function for Reducing Tremor Disturbance of the Joystick

Author

Bing-Yuh Lu ; Chen-Yuan Liu ; JerJunn Luh ; Chao-Chih Shiao ; Fok Ching Chong

Author_Institution

Dept. of Electron. Eng., Tung-Nan Inst. of Technol., Taipei

fYear

2007

fDate

19-22 June 2007

Firstpage

214

Lastpage

216

Abstract

An algorithm of standard deviation based weighted average function (SDWAF) for reducing tremor disturbance was developed, and simulated to test the performance. The minus sign of modified rate meant the SDWAF reduced the tremor disturbance on the movement of powered wheelchair. The average modified rates were -21.93%, +11.68%, -12.85%, and, -18.30% in (a) with the tremor noise of 50 (the maximum value of joystick was 255) in X, and 20 in Y, (b) 75 in X, and 20 in Y, (c) 100 in X, and 20 in Y, and (d) 125 in X, and 20 in Y, respectively. Therefore, the SDWAF was a practical algorithm for reducing the tremor disturbance on the general joystick controlled powered wheelchair in the various environment.

Keywords

handicapped aids; medical control systems; vehicles; general joystick controlled powered wheelchair; joystick tremor disturbance; standard deviation; weighted average function; Biomedical engineering; Communication standards; Damping; Delay; Feedback; Noise reduction; Standards development; Vibration control; Wheelchairs; Working environment noise; joystick; powered wheelchair; tremor;

fLanguage

English

Publisher

ieee

Conference_Titel

e-Health Networking, Application and Services, 2007 9th International Conference on

Conference_Location

Taipei

Print_ISBN

1-4244-0942-X

Type

conf

DOI

10.1109/HEALTH.2007.381632

Filename

4265826